Hello, I have a 2003 Small Business server and I have users not receiving email from a list server. This server sends out mass emails to about 500 users. When sent indivudually they seem to arrive. Our email runs as follows: email is routed to our ISP through their spam filtering service and then deposited into a catch all account. The Exchnge server then pops the catch all and drags all email down. Our troubleshooting confirms that the email from the list server arrives at the catch all account and gets routed to the exchange server, but does not get distributed from there. All other email does. I have checked the Failed Email folder and there is nothing there. I have checked all users "junk mail" folders and nothing there. Is there a setting in exchange that needs to be changed? Does the header of these emails that indicate 500 recipients a limitation for exchange? Any responce appreciated. Thank you in advance.

IF your exchange server has received mail , it has to go somewhere ? Can you enable message tracking and check it in it's log.. Also enable dignostic logging for pop3 connector

Hi, Since we only discuss the Exchange issue on the pure Exchange product environment in this forum, I suggest you create a new thread in the SBS forum. Please understand that SBS Server has integrated all functionalities on a single box which will require the SBS related knowledge which we do not have enough resource. Thank you for your understanding. For your reference, I have enclosed the SBS forum link below: http://social.technet.microsoft.com/Forums/en-US/smallbusinessserver/threads Thanks.Novak Wu-MSFT

Thank you I will try what you suggested.